/* .table {  
  
  border-collapse: collapse;  

  font-family: Futura, Arial, sans-serif;  
  width:400px;
  height:50px;
  
}  */
.table {
  width: 100%;
  padding-left: 15%;
  /* border-style: solid;
  border-left-color: #ff0000 */
}
th
  {
  height:50px;
  text-align:center;
  /* background-color:green; */
  color:rgb(0, 0, 0);
  font-family: monospace;
  font-size: 1.5em;
  }
/* caption {  

  font-size: larger;  

  margin: 1em auto;  

}   */

/* th,td {  

  padding: .65em;  

}   */
/* 
th {  
 
  background: rgb(255, 255, 255) ;  

  
   
  border: 1px solid rgb(24, 23, 23);  
   
  
   
  color: rgb(7, 7, 7);  

}   */

/* td {  

  border: 1px solid#777;  

}  */
/* .tbody tr:nth-child(odd) {  

  background: #ccc;  
  margin:0px auto;
  width: 800px;
}  */

/* 底部按钮样式 */
.commit_assignment{
  margin-top:10px;
  margin-left:10px;
  float: right;
}